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https://issues.apache.org/jira/browse/CB-12193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15735633#comment-15735633
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ASF GitHub Bot commented on CB-12193:
-------------------------------------

GitHub user daserge opened a pull request:

    https://github.com/apache/cordova-windows/pull/215

    CB-12193 cordova.js crashes windows app if there is no CoreWindow

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    ### Platforms affected
    Windows
    
    ### What does this PR do?
    Don't subscribe to WinRT lifecycle events Cordova is running in webview.
    Also made confighelper to load after WinJS as it depends on it.
    [CB-12193](https://issues.apache.org/jira/browse/CB-12193)
    
    ### What testing has been done on this change?
    Manual tests.
    
    ### Checklist
    - [x] [Reported an issue](http://cordova.apache.org/contribute/issues.html) 
in the JIRA database
    - [x] Commit message follows the format: "CB-3232: (android) Fix bug with 
resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform 
affected.
    - [ ] Added automated test coverage as appropriate for this change.
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/daserge/cordova-windows CB-12193

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/cordova-windows/pull/215.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #215
    
----
commit 707bf962823b9585a22dfaa3ffa6f0185562df5a
Author: daserge <v-ses...@microsoft.com>
Date:   2016-12-08T14:53:11Z

    CB-12193 cordova.js crashes windows app if there is no CoreWindow
    Also made confighelper to load after WinJS as it depends on it

----


> cordova.js crashes windows app if there is no CoreWindow
> --------------------------------------------------------
>
>                 Key: CB-12193
>                 URL: https://issues.apache.org/jira/browse/CB-12193
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Windows
>         Environment: Windows 10
>            Reporter: venkata guddanti
>            Priority: Critical
>              Labels: reproduced, triaged, windows
>         Attachments: CordovaTest.zip
>
>
> The back button support in cordova.js crashes windows app. In particular the 
> following line crashes:
> var navigationManager = 
> Windows.UI.Core.SystemNavigationManager.getForCurrentView();
> Putting try catch around it does not help. It crashes deep in the bowels of 
> native code. So I believe there should a fix similar to the following code in 
> WinJS base.js:
>     // If getForCurrentView fails, it is an indication that we are running in 
> a WebView without
>     // a CoreWindow where some WinRT APIs are not available. In this case, we 
> just treat it as
>     // if no WinRT APIs are available.
>     var isCoreWindowAvailable = false;
>     try{
>       _Global.Windows.UI.ViewManagement.InputPane.getForCurrentView();
>       isCoreWindowAvailable = true;
>     }
>     catch (e){
>     }
> You can then skip setting up the back button handler if there is no 
> CoreWindow:
> if (isCoreWindowAvailable)
>       {
>         var navigationManager = 
> Windows.UI.Core.SystemNavigationManager.getForCurrentView();
>         ...
> }
> I am aware that Cordova Windows 10 is not supported in a WebView (i.e. there 
> is no CoreWindow). But WinJS and majority of Windows APIs work. Cordova 4.0.0 
> used to work as well, since there was no back button support in it. Plugins 
> that need CoreWindow (i.e. plugins that show native UI) like Camera etc have 
> issues without it. We have a framework where we proxy these plugins through 
> the main application Window (similar to iOS and Android).
> Please do consider this and incorporate a fix in cordova for Windows 10



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